Based of: http://artwalk.github.io/2017/10/23/Batch-replace-NamedColors-to-RGB-in-Storyboard/

named_colors_compat.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os, json, argparse

print os.getcwd()

parser = argparse.ArgumentParser(description='Convert color assets from storyboards and xibs')
parser.add_argument('--colorSpace', dest="color_space",
          type=str,
          default="calibratedRGB", 
          nargs='?',
          help="Default colorSpace string (default: calibratedRGB)") #calibratedRGB

parser.add_argument('--assetRoot', dest="asset_root",
          type=str,
          default="",
          nargs='?',
          help="Path to search for .colorset files (default: current folder)") #calibratedRGB

colorDict = {}

def custom_color_space(space):
    return 'colorSpace="custom" customColorSpace="{}"'.format(space)

args = parser.parse_args()

colorSpaceMap = {
    'calibratedrgb': 'colorSpace="calibratedRGB"',
    'srgb': custom_color_space("sRGB"),
    'displayP3': custom_color_space("displayP3"),
    'calibratedwhite': custom_color_space("calibratedWhite"),
    'extended-srgb': custom_color_space("sRGB"),
}

defaultColorSpace = colorSpaceMap.get(args.color_space.lower())
searchRoot = args.asset_root

# read all colorset
for root, dirs, files in os.walk("./" + searchRoot):
    for d in dirs:
        if d.endswith(".colorset"):
            colorK = d.split(".")[0]
            #print "found " + colorK
            for file in files:
                if file == "Contents.json":
                    f = open(os.path.join(root, d, file))
                    jd = json.load(f)
                    color = jd["colors"][0]["color"]
                    rgb = color["components"]
                    colorSpace = color["color-space"]
                    if not colorSpace:
                        colorSpace = defaultColorSpace
                    else:
                        colorSpace = colorSpaceMap.get(colorSpace)

                    colorDict[colorK] = 'red="{}" green="{}" blue="{}" alpha="{}" {}'.format(rgb["red"], rgb["green"], rgb["blue"], rgb["alpha"], colorSpace)

print ""
import re

# replacing
for root, dirs, files in os.walk("./"):
    for file in files:
        if file.endswith((".storyboard", ".xib")):
            path = os.path.join(root, file)
            print "Replacing namedColors in " + path
            f = open(path)
            nf = f.read()
            f.close()


            for k, v in colorDict.items():
                nf = re.sub(r"<namedColor name=\"{}\">.*\n( +)<color .*/>\n( +)</namedColor>".format(k), '<namedColor name="{}">\n\g<1><color {}/>\n\g<2></namedColor>'.format(k, v), nf)
                #print "Replaced named color: " + k

            f = open(path, 'w')
            f.write(nf)
            f.close()

Updated to keep named colors in the resources but update their values based on current color resources values (handy if you need to hot swap on build)

How can i add py to run, Thank you!